return "$lr";
default:
{
- static char buf[10];
- sprintf(buf, "$%d", reg);
- return buf;
+ /* cycle through four buffers to handle multiple calls per printf */
+ static char buf[4][10];
+ static int b = 0;
+ b = (b + 1) % 4;
+ sprintf(buf[b], "$%d", reg);
+ return buf[b];
}
}
}
-static void emit_RR(struct spe_function *p, unsigned op, unsigned rT,
- unsigned rA, unsigned rB, const char *name)
+static void
+emit_instruction(struct spe_function *p, uint32_t inst_bits)
+{
+ if (!p->store)
+ return; /* out of memory, drop the instruction */
+
+ if (p->num_inst == p->max_inst) {
+ /* allocate larger buffer */
+ uint32_t *newbuf;
+ p->max_inst *= 2; /* 2x larger */
+ newbuf = align_malloc(p->max_inst * SPE_INST_SIZE, 16);
+ if (newbuf) {
+ memcpy(newbuf, p->store, p->num_inst * SPE_INST_SIZE);
+ }
+ align_free(p->store);
+ p->store = newbuf;
+ if (!p->store) {
+ /* out of memory */
+ p->num_inst = 0;
+ return;
+ }
+ }
+
+ p->store[p->num_inst++] = inst_bits;
+}
+
+
+
+static void emit_RR(struct spe_function *p, unsigned op, int rT,
+ int rA, int rB, const char *name)
{
union spe_inst_RR inst;
inst.inst.op = op;
inst.inst.rB = rB;
inst.inst.rA = rA;
inst.inst.rT = rT;
- p->store[p->num_inst++] = inst.bits;
- assert(p->num_inst <= p->max_inst);
+ emit_instruction(p, inst.bits);
if (p->print) {
indent(p);
printf("%s\t%s, %s, %s\n",
}
-static void emit_RRR(struct spe_function *p, unsigned op, unsigned rT,
- unsigned rA, unsigned rB, unsigned rC, const char *name)
+static void emit_RRR(struct spe_function *p, unsigned op, int rT,
+ int rA, int rB, int rC, const char *name)
{
union spe_inst_RRR inst;
inst.inst.op = op;
inst.inst.rB = rB;
inst.inst.rA = rA;
inst.inst.rC = rC;
- p->store[p->num_inst++] = inst.bits;
- assert(p->num_inst <= p->max_inst);
+ emit_instruction(p, inst.bits);
if (p->print) {
indent(p);
printf("%s\t%s, %s, %s, %s\n", rem_prefix(name), reg_name(rT),
}
-static void emit_RI7(struct spe_function *p, unsigned op, unsigned rT,
- unsigned rA, int imm, const char *name)
+static void emit_RI7(struct spe_function *p, unsigned op, int rT,
+ int rA, int imm, const char *name)
{
union spe_inst_RI7 inst;
inst.inst.op = op;
inst.inst.i7 = imm;
inst.inst.rA = rA;
inst.inst.rT = rT;
- p->store[p->num_inst++] = inst.bits;
- assert(p->num_inst <= p->max_inst);
+ emit_instruction(p, inst.bits);
if (p->print) {
indent(p);
printf("%s\t%s, %s, 0x%x\n",
-static void emit_RI8(struct spe_function *p, unsigned op, unsigned rT,
- unsigned rA, int imm, const char *name)
+static void emit_RI8(struct spe_function *p, unsigned op, int rT,
+ int rA, int imm, const char *name)
{
union spe_inst_RI8 inst;
inst.inst.op = op;
inst.inst.i8 = imm;
inst.inst.rA = rA;
inst.inst.rT = rT;
- p->store[p->num_inst++] = inst.bits;
- assert(p->num_inst <= p->max_inst);
+ emit_instruction(p, inst.bits);
if (p->print) {
indent(p);
printf("%s\t%s, %s, 0x%x\n",
-static void emit_RI10(struct spe_function *p, unsigned op, unsigned rT,
- unsigned rA, int imm, const char *name)
+static void emit_RI10(struct spe_function *p, unsigned op, int rT,
+ int rA, int imm, const char *name)
{
union spe_inst_RI10 inst;
inst.inst.op = op;
inst.inst.i10 = imm;
inst.inst.rA = rA;
inst.inst.rT = rT;
- p->store[p->num_inst++] = inst.bits;
- assert(p->num_inst <= p->max_inst);
+ emit_instruction(p, inst.bits);
if (p->print) {
indent(p);
- if (strcmp(name, "spe_lqd") == 0 ||
- strcmp(name, "spe_stqd") == 0) {
- printf("%s\t%s, %d(%s)\n",
- rem_prefix(name), reg_name(rT), imm, reg_name(rA));
- }
- else {
- printf("%s\t%s, %s, 0x%x\n",
- rem_prefix(name), reg_name(rT), reg_name(rA), imm);
- }
+ printf("%s\t%s, %s, 0x%x\n",
+ rem_prefix(name), reg_name(rT), reg_name(rA), imm);
}
}
-static void emit_RI16(struct spe_function *p, unsigned op, unsigned rT,
+/** As above, but do range checking on signed immediate value */
+static void emit_RI10s(struct spe_function *p, unsigned op, int rT,
+ int rA, int imm, const char *name)
+{
+ assert(imm <= 511);
+ assert(imm >= -512);
+ emit_RI10(p, op, rT, rA, imm, name);
+}
+
+
+static void emit_RI16(struct spe_function *p, unsigned op, int rT,
int imm, const char *name)
{
union spe_inst_RI16 inst;
inst.inst.op = op;
inst.inst.i16 = imm;
inst.inst.rT = rT;
- p->store[p->num_inst++] = inst.bits;
- assert(p->num_inst <= p->max_inst);
+ emit_instruction(p, inst.bits);
if (p->print) {
indent(p);
printf("%s\t%s, 0x%x\n", rem_prefix(name), reg_name(rT), imm);
}
-static void emit_RI18(struct spe_function *p, unsigned op, unsigned rT,
+static void emit_RI18(struct spe_function *p, unsigned op, int rT,
int imm, const char *name)
{
union spe_inst_RI18 inst;
inst.inst.op = op;
inst.inst.i18 = imm;
inst.inst.rT = rT;
- p->store[p->num_inst++] = inst.bits;
- assert(p->num_inst <= p->max_inst);
+ emit_instruction(p, inst.bits);
if (p->print) {
indent(p);
printf("%s\t%s, 0x%x\n", rem_prefix(name), reg_name(rT), imm);
}
-
+#define EMIT(_name, _op) \
+void _name (struct spe_function *p) \
+{ \
+ emit_RR(p, _op, 0, 0, 0, __FUNCTION__); \
+}
#define EMIT_(_name, _op) \
-void _name (struct spe_function *p, unsigned rT) \
+void _name (struct spe_function *p, int rT) \
{ \
emit_RR(p, _op, rT, 0, 0, __FUNCTION__); \
}
#define EMIT_R(_name, _op) \
-void _name (struct spe_function *p, unsigned rT, unsigned rA) \
+void _name (struct spe_function *p, int rT, int rA) \
{ \
emit_RR(p, _op, rT, rA, 0, __FUNCTION__); \
}
#define EMIT_RR(_name, _op) \
-void _name (struct spe_function *p, unsigned rT, unsigned rA, unsigned rB) \
+void _name (struct spe_function *p, int rT, int rA, int rB) \
{ \
emit_RR(p, _op, rT, rA, rB, __FUNCTION__); \
}
#define EMIT_RRR(_name, _op) \
-void _name (struct spe_function *p, unsigned rT, unsigned rA, unsigned rB, unsigned rC) \
+void _name (struct spe_function *p, int rT, int rA, int rB, int rC) \
{ \
emit_RRR(p, _op, rT, rA, rB, rC, __FUNCTION__); \
}
#define EMIT_RI7(_name, _op) \
-void _name (struct spe_function *p, unsigned rT, unsigned rA, int imm) \
+void _name (struct spe_function *p, int rT, int rA, int imm) \
{ \
emit_RI7(p, _op, rT, rA, imm, __FUNCTION__); \
}
#define EMIT_RI8(_name, _op, bias) \
-void _name (struct spe_function *p, unsigned rT, unsigned rA, int imm) \
+void _name (struct spe_function *p, int rT, int rA, int imm) \
{ \
emit_RI8(p, _op, rT, rA, bias - imm, __FUNCTION__); \
}
#define EMIT_RI10(_name, _op) \
-void _name (struct spe_function *p, unsigned rT, unsigned rA, int imm) \
+void _name (struct spe_function *p, int rT, int rA, int imm) \
{ \
emit_RI10(p, _op, rT, rA, imm, __FUNCTION__); \
}
+#define EMIT_RI10s(_name, _op) \
+void _name (struct spe_function *p, int rT, int rA, int imm) \
+{ \
+ emit_RI10s(p, _op, rT, rA, imm, __FUNCTION__); \
+}
+
#define EMIT_RI16(_name, _op) \
-void _name (struct spe_function *p, unsigned rT, int imm) \
+void _name (struct spe_function *p, int rT, int imm) \
{ \
emit_RI16(p, _op, rT, imm, __FUNCTION__); \
}
#define EMIT_RI18(_name, _op) \
-void _name (struct spe_function *p, unsigned rT, int imm) \
+void _name (struct spe_function *p, int rT, int imm) \
{ \
emit_RI18(p, _op, rT, imm, __FUNCTION__); \
}
#include "rtasm_ppc_spe.h"
+
/**
* Initialize an spe_function.
- * \param code_size size of instruction buffer to allocate, in bytes.
+ * \param code_size initial size of instruction buffer to allocate, in bytes.
+ * If zero, use a default.
*/
void spe_init_func(struct spe_function *p, unsigned code_size)
{
- register unsigned int i;
+ uint i;
+
+ if (!code_size)
+ code_size = 64;
- p->store = align_malloc(code_size, 16);
p->num_inst = 0;
p->max_inst = code_size / SPE_INST_SIZE;
+ p->store = align_malloc(code_size, 16);
p->set_count = 0;
memset(p->regs, 0, SPE_NUM_REGS * sizeof(p->regs[0]));
p->regs[i] = 1;
}
- p->print = false;
+ p->print = FALSE;
p->indent = 0;
}
*/
void spe_release_register(struct spe_function *p, int reg)
{
+ assert(reg >= 0);
assert(reg < SPE_NUM_REGS);
assert(p->regs[reg] == 1);
*/
void spe_allocate_register_set(struct spe_function *p)
{
- register unsigned int i;
+ uint i;
/* Keep track of the set count. If it ever wraps around to 0,
* we're in trouble.
* when the register set is released.
*/
for (i = 0; i < SPE_NUM_REGS; i++) {
- if (p->regs[i] > 0) p->regs[i]++;
+ if (p->regs[i] > 0)
+ p->regs[i]++;
}
}
void spe_release_register_set(struct spe_function *p)
{
- unsigned int i;
+ uint i;
/* If the set count drops below zero, we're in trouble. */
assert(p->set_count > 0);
* available.
*/
for (i = 0; i < SPE_NUM_REGS; i++) {
- if (p->regs[i] > 0) p->regs[i]--;
+ if (p->regs[i] > 0)
+ p->regs[i]--;
+ }
+}
+
+
+unsigned
+spe_get_registers_used(const struct spe_function *p, ubyte used[])
+{
+ unsigned i, num = 0;
+ /* only count registers in the range available to callers */
+ for (i = 2; i < 80; i++) {
+ if (p->regs[i]) {
+ used[num++] = i;
+ }
}
+ return num;
}
}
-extern void
+void
spe_comment(struct spe_function *p, int rel_indent, const char *s)
{
if (p->print) {
}
+/**
+ * Load quad word.
+ * NOTE: offset is in bytes and the least significant 4 bits must be zero!
+ */
+void spe_lqd(struct spe_function *p, int rT, int rA, int offset)
+{
+ const boolean pSave = p->print;
+
+ /* offset must be a multiple of 16 */
+ assert(offset % 16 == 0);
+ /* offset must fit in 10-bit signed int field, after shifting */
+ assert((offset >> 4) <= 511);
+ assert((offset >> 4) >= -512);
+
+ p->print = FALSE;
+ emit_RI10(p, 0x034, rT, rA, offset >> 4, "spe_lqd");
+ p->print = pSave;
+
+ if (p->print) {
+ indent(p);
+ printf("lqd\t%s, %d(%s)\n", reg_name(rT), offset, reg_name(rA));
+ }
+}
+
+
+/**
+ * Store quad word.
+ * NOTE: offset is in bytes and the least significant 4 bits must be zero!
+ */
+void spe_stqd(struct spe_function *p, int rT, int rA, int offset)
+{
+ const boolean pSave = p->print;
+
+ /* offset must be a multiple of 16 */
+ assert(offset % 16 == 0);
+ /* offset must fit in 10-bit signed int field, after shifting */
+ assert((offset >> 4) <= 511);
+ assert((offset >> 4) >= -512);
+
+ p->print = FALSE;
+ emit_RI10(p, 0x024, rT, rA, offset >> 4, "spe_stqd");
+ p->print = pSave;
+
+ if (p->print) {
+ indent(p);
+ printf("stqd\t%s, %d(%s)\n", reg_name(rT), offset, reg_name(rA));
+ }
+}
+
+
/**
* For branch instructions:
* \param d if 1, disable interupts if branch is taken
*/
/** Branch Indirect to address in rA */
-void spe_bi(struct spe_function *p, unsigned rA, int d, int e)
+void spe_bi(struct spe_function *p, int rA, int d, int e)
{
emit_RI7(p, 0x1a8, 0, rA, (d << 5) | (e << 4), __FUNCTION__);
}
/** Interupt Return */
-void spe_iret(struct spe_function *p, unsigned rA, int d, int e)
+void spe_iret(struct spe_function *p, int rA, int d, int e)
{
emit_RI7(p, 0x1aa, 0, rA, (d << 5) | (e << 4), __FUNCTION__);
}
/** Branch indirect and set link on external data */
-void spe_bisled(struct spe_function *p, unsigned rT, unsigned rA, int d,
+void spe_bisled(struct spe_function *p, int rT, int rA, int d,
int e)
{
emit_RI7(p, 0x1ab, rT, rA, (d << 5) | (e << 4), __FUNCTION__);
}
/** Branch indirect and set link. Save PC in rT, jump to rA. */
-void spe_bisl(struct spe_function *p, unsigned rT, unsigned rA, int d,
+void spe_bisl(struct spe_function *p, int rT, int rA, int d,
int e)
{
emit_RI7(p, 0x1a9, rT, rA, (d << 5) | (e << 4), __FUNCTION__);
}
/** Branch indirect if zero word. If rT.word[0]==0, jump to rA. */
-void spe_biz(struct spe_function *p, unsigned rT, unsigned rA, int d, int e)
+void spe_biz(struct spe_function *p, int rT, int rA, int d, int e)
{
emit_RI7(p, 0x128, rT, rA, (d << 5) | (e << 4), __FUNCTION__);
}
/** Branch indirect if non-zero word. If rT.word[0]!=0, jump to rA. */
-void spe_binz(struct spe_function *p, unsigned rT, unsigned rA, int d, int e)
+void spe_binz(struct spe_function *p, int rT, int rA, int d, int e)
{
emit_RI7(p, 0x129, rT, rA, (d << 5) | (e << 4), __FUNCTION__);
}
/** Branch indirect if zero halfword. If rT.halfword[1]==0, jump to rA. */
-void spe_bihz(struct spe_function *p, unsigned rT, unsigned rA, int d, int e)
+void spe_bihz(struct spe_function *p, int rT, int rA, int d, int e)
{
emit_RI7(p, 0x12a, rT, rA, (d << 5) | (e << 4), __FUNCTION__);
}
/** Branch indirect if non-zero halfword. If rT.halfword[1]!=0, jump to rA. */
-void spe_bihnz(struct spe_function *p, unsigned rT, unsigned rA, int d, int e)
+void spe_bihnz(struct spe_function *p, int rT, int rA, int d, int e)
{
emit_RI7(p, 0x12b, rT, rA, (d << 5) | (e << 4), __FUNCTION__);
}
#if 0
stop;
EMIT_RR (spe_stopd, 0x140);
-EMIT_ (spe_lnop, 0x001);
EMIT_ (spe_nop, 0x201);
sync;
EMIT_ (spe_dsync, 0x003);
void
-spe_load_float(struct spe_function *p, unsigned rT, float x)
+spe_load_float(struct spe_function *p, int rT, float x)
{
if (x == 0.0f) {
spe_il(p, rT, 0x0);
void
-spe_load_int(struct spe_function *p, unsigned rT, int i)
+spe_load_int(struct spe_function *p, int rT, int i)
{
if (-32768 <= i && i <= 32767) {
spe_il(p, rT, i);
}
}
-void spe_load_uint(struct spe_function *p, unsigned rT, unsigned int ui)
+void spe_load_uint(struct spe_function *p, int rT, uint ui)
{
/* If the whole value is in the lower 18 bits, use ila, which
* doesn't sign-extend. Otherwise, if the two halfwords of
* Bytes Immediate (fsmbi) to load the value in a single instruction.
* Otherwise, in the general case, we have to use ilhu followed by iohl.
*/
- if ((ui & 0xfffc0000) == ui) {
+ if ((ui & 0x0003ffff) == ui) {
spe_ila(p, rT, ui);
}
else if ((ui >> 16) == (ui & 0xffff)) {
((ui & 0x00ff0000) == 0 || (ui & 0x00ff0000) == 0x00ff0000) &&
((ui & 0xff000000) == 0 || (ui & 0xff000000) == 0xff000000)
) {
- unsigned int mask = 0;
+ uint mask = 0;
/* fsmbi duplicates each bit in the given mask eight times,
* using a 16-bit value to initialize a 16-byte quadword.
* Each 4-bit nybble of the mask corresponds to a full word
}
}
-/* This function is constructed identically to spe_sor_uint() below.
+/**
+ * This function is constructed identically to spe_xor_uint() below.
* Changes to one should be made in the other.
*/
-void spe_and_uint(struct spe_function *p, unsigned rT, unsigned rA, unsigned int ui)
+void
+spe_and_uint(struct spe_function *p, int rT, int rA, uint ui)
{
/* If we can, emit a single instruction, either And Byte Immediate
* (which uses the same constant across each byte), And Halfword Immediate
*
* Otherwise, we'll need to use a temporary register.
*/
- register unsigned int tmp;
+ uint tmp;
/* If the upper 23 bits are all 0s or all 1s, sign extension
* will work and we can use And Word Immediate
}
/* Otherwise, we'll have to use a temporary register. */
- unsigned int tmp_reg = spe_allocate_available_register(p);
+ int tmp_reg = spe_allocate_available_register(p);
spe_load_uint(p, tmp_reg, ui);
spe_and(p, rT, rA, tmp_reg);
spe_release_register(p, tmp_reg);
}
-/* This function is constructed identically to spe_and_uint() above.
+
+/**
+ * This function is constructed identically to spe_and_uint() above.
* Changes to one should be made in the other.
*/
-void spe_xor_uint(struct spe_function *p, unsigned rT, unsigned rA, unsigned int ui)
+void
+spe_xor_uint(struct spe_function *p, int rT, int rA, uint ui)
{
/* If we can, emit a single instruction, either Exclusive Or Byte
* Immediate (which uses the same constant across each byte), Exclusive
*
* Otherwise, we'll need to use a temporary register.
*/
- register unsigned int tmp;
+ uint tmp;
/* If the upper 23 bits are all 0s or all 1s, sign extension
* will work and we can use Exclusive Or Word Immediate
}
/* Otherwise, we'll have to use a temporary register. */
- unsigned int tmp_reg = spe_allocate_available_register(p);
+ int tmp_reg = spe_allocate_available_register(p);
spe_load_uint(p, tmp_reg, ui);
spe_xor(p, rT, rA, tmp_reg);
spe_release_register(p, tmp_reg);
}
void
-spe_compare_equal_uint(struct spe_function *p, unsigned rT, unsigned rA, unsigned int ui)
+spe_compare_equal_uint(struct spe_function *p, int rT, int rA, uint ui)
{
/* If the comparison value is 9 bits or less, it fits inside a
* Compare Equal Word Immediate instruction.
}
/* Otherwise, we're going to have to load a word first. */
else {
- unsigned int tmp_reg = spe_allocate_available_register(p);
+ int tmp_reg = spe_allocate_available_register(p);
spe_load_uint(p, tmp_reg, ui);
spe_ceq(p, rT, rA, tmp_reg);
spe_release_register(p, tmp_reg);
}
void
-spe_compare_greater_uint(struct spe_function *p, unsigned rT, unsigned rA, unsigned int ui)
+spe_compare_greater_uint(struct spe_function *p, int rT, int rA, uint ui)
{
/* If the comparison value is 10 bits or less, it fits inside a
* Compare Logical Greater Than Word Immediate instruction.
}
/* Otherwise, we're going to have to load a word first. */
else {
- unsigned int tmp_reg = spe_allocate_available_register(p);
+ int tmp_reg = spe_allocate_available_register(p);
spe_load_uint(p, tmp_reg, ui);
spe_clgt(p, rT, rA, tmp_reg);
spe_release_register(p, tmp_reg);
}
void
-spe_splat(struct spe_function *p, unsigned rT, unsigned rA)
+spe_splat(struct spe_function *p, int rT, int rA)
{
+ /* Use a temporary, just in case rT == rA */
+ int tmp_reg = spe_allocate_available_register(p);
/* Duplicate bytes 0, 1, 2, and 3 across the whole register */
- spe_ila(p, rT, 0x00010203);
- spe_shufb(p, rT, rA, rA, rT);
+ spe_ila(p, tmp_reg, 0x00010203);
+ spe_shufb(p, rT, rA, rA, tmp_reg);
+ spe_release_register(p, tmp_reg);
}
void
-spe_complement(struct spe_function *p, unsigned rT, unsigned rA)
+spe_complement(struct spe_function *p, int rT, int rA)
{
spe_nor(p, rT, rA, rA);
}
void
-spe_move(struct spe_function *p, unsigned rT, unsigned rA)
+spe_move(struct spe_function *p, int rT, int rA)
{
/* Use different instructions depending on the instruction address
* to take advantage of the dual pipelines.
void
-spe_zero(struct spe_function *p, unsigned rT)
+spe_zero(struct spe_function *p, int rT)
{
spe_xor(p, rT, rT, rT);
}
void
-spe_splat_word(struct spe_function *p, unsigned rT, unsigned rA, int word)
+spe_splat_word(struct spe_function *p, int rT, int rA, int word)
{
assert(word >= 0);
assert(word <= 3);
* like "x = min(x, a)", we always allocate a new register to be safe.
*/
void
-spe_float_min(struct spe_function *p, unsigned rT, unsigned rA, unsigned rB)
+spe_float_min(struct spe_function *p, int rT, int rA, int rB)
{
- unsigned int compare_reg = spe_allocate_available_register(p);
+ int compare_reg = spe_allocate_available_register(p);
spe_fcgt(p, compare_reg, rA, rB);
spe_selb(p, rT, rA, rB, compare_reg);
spe_release_register(p, compare_reg);
* so that the larger of the two is selected instead of the smaller.
*/
void
-spe_float_max(struct spe_function *p, unsigned rT, unsigned rA, unsigned rB)
+spe_float_max(struct spe_function *p, int rT, int rA, int rB)
{
- unsigned int compare_reg = spe_allocate_available_register(p);
+ int compare_reg = spe_allocate_available_register(p);
spe_fcgt(p, compare_reg, rA, rB);
spe_selb(p, rT, rB, rA, compare_reg);
spe_release_register(p, compare_reg);
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